The next big release for gSender is here! (1.2.2)

Hey everyone! @all

It’s time…

After over a year of testing, debugging, and iterating we are excited to share our biggest gSender update yet!

Several of the features being released today have been in development and testing for over a year, so a big Thank You to all of those that helped us test and offer your feedback and experiences. The entire Sienci Labs team has been hard at work refining, stabilizing and speeding things up in the background, and now everyone can share in all of the new and super cool features available.

Some Quick history

You might be wondering: “a year? really? Haven’t they been updating gSender continuously?” and yes you’re right we have been.

Many typical gSender users might not know this but while gSender HAS been getting continuous updates on average every month, we’d also ‘spun-off’ what you might call a gSender sibling that we call “gSender Edge” around a year ago. The purpose of gSender Edge was to answer the question of:

With now thousands of people using gSender, we didn’t want to risk the chances that a new feature or update could ruin everyone’s experience using their CNCs, so how do we work on these new features in a safer way?

Edge Lifecycle

Edge isn’t a replacement for gSender in any way - it’s a way for us to test and get feedback on new, bigger features without exposing them to users who may not be interested or causing unexpected bugs. This follows a cycle that can be several months long where:

  1. A new Edge version is split off from Main in order to prototype some new functionality and features (you can tell when this happens because the numbering scheme will jump up from 1.1.6 to EDGE-1.2.0, for example)
  2. Edge eventually stops adding major features so it can become more refined from user feedback and squashing bugs
  3. Once everything seems stable, everything that’s been added to Edge becomes a part of Main gSender so that everyone can now enjoy the new features
  4. The process repeats

We’re happy to announce that we’re now completing that cycle for the first time and flooding a whole lot of new features into gSender!

Get ready to see a whole lot of new features that this gSender update is bringing :smiley:

We’ve spent a huge time commitment just revamping the resources with about 24 new page-lengths being added to describe all the new features and better explain existing ones; that means expanding our existing documentation by about 40%!

By the way, this means that YES this new update will be including everything from Edge 1.2.5 plus more, it also means that soon enough the Rotary/HAL version will receive all these same updates and be released as the new version of gSender Edge. Edge will always be available for anyone to try and will always be ahead of gSender by having more features albeit likely less ‘stable’.

So let’s take a peek under the hood at some of the highlights to see what all the excitement is about!

Faster and Lighter :zap:

If you’ve ever found yourself waiting for a file to load, get ready to notice the speed increase! If your file still needs to load there’s even added in a fancy dancy new loading bar!

  • This was another big effort by our development team to speed things up under the hood and use less memory once files are loaded. There are multiple areas where on average files loaded 20% faster and gSender used 2/3rds less memory

Look at it Load!

Better protected against interrupted jobs

If you’ve ever experienced disconnecting during a job, you will quickly wonder “where was I just now?”.
We continue to have brainstorming sessions at the Lab to think of ways to help when problems like this occur and this is a new one we think will help.

  • In specific cases where the USB port disconnects while running a job, gSender will now be able to recognize the problem and alert you about it, suggesting to reconnect and providing a line to resume from using our ‘Start from line’ feature. This allows you to restart close to the same spot you stopped on, saving time and materials.

Tested Gamepads and Shortcut Printing :video_game:

Keyboards are great, but gamepads are better! You’ve always been able to add your own gamepad profile to gSender but we’ve now done some of our own internal testing to validate some gamepads that we can recommend. With community help, we hope to continue growing this list of officially tested gamepads.

  • This shortlist of options are meant to be common, affordable, and easy to source. This currently includes: the YCCTeam Xbox controller and the Logitech F710. Now see that in gSender → Settings → Shortcuts → Gamepad you’ll find pre-made presets for these gamepads to easily load up and use.
  • Remember you can also now print a PDF of your personal keyboard or gamepad shortcuts for display in your workshop. They will quickly be committed to memory and you won’t be searching for that mouse any longer!

Set Lasers to Stun

A laser diode in harmony with a CNC router can be great because you can clamp the material to carve and then laser engrave afterwards and know that everything is still aligned. As a diode user, enjoy some of gSender’s new unique features to support them when you turn ‘Laser Mode’ on.

  • Turn on the laser at low power when running a job outline (enabled in the Spindle/Laser settings). This will help you to better see where your project is going to be located on the material
  • Automatically apply an offset from the router/spindle to the laser so all your g-code files stay aligned (configured in the Spindle/Laser settings)
  • Switch to a specialized visualization designed to show raster engraving images better than typical g-code visualizers

Previous Visualization versus New Laser Visualizer

New Diagnostics Tab

What’s up Doc? Now have a little bit more insight about your machine whether it’s testing limit switches, checking firmware or profiles, and now get all this information and more in a downloadable PDF for easy sharing!

  • Just click to ‘Download Now!’. This PDF file is meant to include information on your computer, your CNC, recent alarms / errors, any currently loaded g-code file, and more. It’s basically a treasure trove of information that you can share on community forums, Facebook groups, or with your CNC customer support; going a long way towards getting help from others on diagnosing CNC problems .

Remote Control :calling:

Look no hands! Remote mode is exactly how it sounds, giving you the ability to connect to any device running gSender from any other device on the same network through a web browser. You’ll be jogging and zeroing from your phone before you know it :slight_smile: This feature allows you to:

  • Load in a file from your design computer outside your shop then run it on your computer inside the shop
  • Use a tablet as the primary means of controlling your CNC rather than a mouse and keyboard
  • Use your phone to jog your machine around or run other functions
  • Leverage a mini PC or Raspberry Pi as the inline (tethered) computer for cheap, fanless, and reliable operation with less effort to have a display, keyboard, and mouse

New Tool Change Support and Wizards

Isn’t it nice when someone offers to help out? We’ve hired a wizard to assist! Having options for doing some of the repetitive processes sure makes the job easier and decreases the chances of human error. Expanding on the initial options of tool changes, we’ve added new wizards that walk you through using the ‘paper method’, a touch plate, or using a tool length sensor for single file, multi-tool jobs.

  • Remember that all these new features have further reading can find in the gSender Resources! Learn about the 5 revised tool changing options, what they do, and which one would best suit you.

Anonymous Information

Completely optional, completely anonymized, can be turned off anytime, only works on internet-connected devices. More and more we’re finding it would be helpful if we knew certain features are widely used or certain errors are constantly encountered to understand how we can improve the gSender or its documentation. Remember gSender’s code is open-source and viewable by anyone so we don’t have anything to hide, so if you’re fine with us knowing things like the CNC profile you use, the computer you run gSender on, and other ways that you use the app then you can decide what you prefer for this particular setting :slight_smile:

Some other assorted features include:

Conclusions and Downloads

We hope you all enjoy everything new that’s been brought to gSender! We still have so many ideas that are in progress that either iterates on what’s just been release or brings even more new features to the table. If you’re already an Edge user, feel free to use this until the next Edge release comes out shortly where we’re working on supporting the new HAL firmware and Rotary axes

Remember that though the team has been working hard to make this a stable release and squash all of the bugs over the past 12+ months, we can’t guarantee that there won’t be the odd issue that needs to be addressed. Please let us know right away if you have any concerns or have found a new bug and our team will move quickly on it.

Many congratulations :tada: :tada: to the whole team that’s worked so hard to get to this point including the whole software development team of Kevin, Walid, and more, and to Jay and a new join Stephen for helping me with bringing all the new documentation up-to-date, as well as many other people behind the scenes!

@StephenCampbell actually also helped me to compile all this information together for this post and he wanted to add some words:

P.S. - I’m a new Sienci Labs team member! You may see me here in our community or helping out on the support side of things. I’ve been busy updating all of the documentation for this new update, check it out at for more information on gSender. I’d love to hear your feedback!

And with that… find the link here (Release v1.2.0 · Sienci-Labs/gsender · GitHub) to get the latest version of gSender or go to the main gSender download page:

Note: due to the large amount of changes from 1.1.7 to 1.2.0, we weren’t able to get the typical auto-updater to won’t so you’ll need to install the new version manually. This also goes for people with Edge installed that want to download 1.2.0

Cheers everyone!

Full Notes on the new Version:

  • gSender runs noticeably faster and lighter!
    • There were multiple areas where we were able to make file processing on average 20% more efficient and reduce overall program memory usage by an average of 2/3rds due to an increased node sandbox memory size and improvements to multiple run times
    • On files that still take a while to load we’ve now added a loading bar window to show file loading progress
  • Added new job recovery functionality
    • In specific instances where your machine’s USB port disconnects from gSender during a job it’ll be able to recommend where you should restart from
  • Updates to gamepad controller support
    • List of officially tested controllers if you’d like to select a gamepad that works more reliably with gSender
    • Tested controllers come with their own pre-loaded presets
    • Improved UI for creating controller profiles
    • Available PDF printout of shortcuts to hang up near your machine
  • Better support for Laser Diodes
    • Optional low-power laser enable on outlining
    • Laser-specific visualization: there’s a different style when laser mode is on and that colour can be customized
    • Laser offset now allows for negative offset values
  • New Diagnostic tab inside the Calibrate Tool
    • See at-a-glance information on whether your limit switches, touch probe, or other pins are activated
    • General summary on your CNCs firmware settings
    • The ability to generate a Diagnostic PDF file that includes information on your computer, CNC, recent alarms / errors, any currently loaded g-code file, and more! Very handy to share with our support team or other CNCers to help diagnose problems your CNC might be experiencing
  • Remote Mode, control your CNC remotely!
    • Connect to your CNC from a myriad of other internet-connected devices for loading files from other computers or jogging and zeroing from your phone
    • Easy to set up and configure
  • Tool changing is now more fully supported by our new Wizard
    • gSender already recognized M0 and M6 commands to initialize a pause in the middle of a file
    • New processes to support using the ‘paper method’, a touch plate, or a tool length sensor (choose based on your CNC setup) now allow more flexibility in handling tool changing and in some cases can pop up a Wizard to direct you through each step and without the need for custom macros
  • Other assorted features
    • Optional Anonymous Information gathering
    • Slider overrides for easier feed rate and spindle / laser adjustment on the fly
    • Ability to toggle between job overrides and file attributes before starting a job to fine-tune feed and speed overrides before starting a job
    • Get a top-down snapshot image of your job with the new SVG Visualizer that bridges the gap between a fully disabled visualizer or the full 3D one (useful for less powerful computers)
    • Colour coded Console on certain commands like alarms and errors that can also now pop-out
  • Assorted other settings
    • New safety tab for tracking alarms and errors and accessing safety settings
    • Soft limit warning on file load if machine has limit switches
    • Customizable probe fail distance in Z
    • More visualization theme customizations for ‘light’, ‘dark’, or your own fully custom design
    • New Shortcuts for controlling Probing, Visualization, and Macros and the ability to filter shortcuts by category to easily find and edit them
    • New stats tab for tracking jobs run on your CNC
    • Custom decimal places on the DRO
  • and other bug fixes for Linux auto updates, Settings exporting, Preferred units and file unit modals, Bounding box relative movement, Shortcut printing and more!

Love gSender and loyal user. I can find a lot of value in most of the new features but I’ve got to say the Data Tracking function falls way short. Not sure what use the Average Time data point is. What is really needed is a jobs log that provides information (file name, date/time run, runtime, etc.) for all previous jobs.


Yes definitely, it’s pretty bare-bones as-is but the long-term plans are much greater for job tracking and maintenance reminders. Thanks for the feedback Doug :+1:


Greetings – as reported in the 1.2.5 EDGE release, I’ve had no success since 1.1.7. I can load gSender, but file loads often fail – or all responses fail within about 30 seconds.

I can connect to my OpenBuilds Controller, even though it doesn’t show up as an available controller. I can home in all axes, but pretty much that is it.

Running a pretty vanilla Debian Bullseye system. Diagnostics attached, and happy to help test any way that I can.

diagnostics_6-15-2023_21-54-06.pdf (10.7 KB)

1 Like

This is Awesome! Congrats to thee entire team!

1 Like

Hey folks - 1.2.1 is released with some quick fixes for file loading, controller jogging, and more.

  • Fix for files not loading for some users
  • Toolchange strategy missing units added
  • Controller functionality issues addressed
  • Calibration tools calculate correct values based on input
  • Surfacing unit conversion on RPM removed
  • Laser unit renamed to Power from RPM
  • Color theme loading no longer loads non-existant file

We should have fixes for other issues cropping up in the next few weeks - but for now enjoy being able to load files again.


1 Like

A post was split to a new topic: Tool change option problem

A post was split to a new topic: File loading issues in 1.2.1

A post was split to a new topic: Bitsetter in 1.2.1

Can’t wait to try out the new version. I’ve used some of the features in Edge already.

I’m a developer and have some things I’d like to contribute to the project. Are there any published design docs that I could use to familiarize myself with the codebase? Is there anything special I need to know for development, or is it just a standard Electron project with the typical scripts?

Great work!

1 Like

I think this has been discussed a few times. It would be nice to be able to output at least filename and start/stop date/time. Being able to see stats in the new version shows they are getting there in collecting the data. It looks like just file output is the next step. Not a simple task given you have to support multiple OS versions but I would guess a CSV file is what we can expect to see in the future.

Good day. I there any update on when gSender will enable the autozero touch plate to be used on other corners? Thanks


1 Like

Exciting news that these features have been pulled in - any early ideas on what to develop next?

I can’t answer your question but I can welcome you to the group Michael. So welcome to the group! I hope your question gets answered because we all want to know :slight_smile:

Hey folks, 1.2.2 has been released which should address some of the more common pain points we’ve seen reported.

  • Fix for overrides leading to gcode errors
  • Override button now correctly sends minor adjustment with slider for major
  • Override value correctly updates with keybind usage
  • Using override keybind should now display the override panel
  • Multiple toolchanges in a single file now display the correct tool number in the Wizard
  • Controller binds should work with toolchange wizard active
  • Spindle RPM no longer incorrectly converting units
  • Spindle slider now reflects EEPROM values for min and max
  • Jog speed properly converts through preferred unit changes
  • Larger margin on shortcut printout
  • M0 in feeder macros now displays M0 pause dialog
  • Added missing outline keybind
  • Unlock keybind should work in more situations where a soft reset was required

As always, the latest version can be found on Github:


Kevin, I will load the new version and try it.

Thanks for the update!

1.2.2 seems ok. M0 throws a dialog and allows tool changes, which fits nicely with output from Carbide Create. But M05 and M06 just pause the machine with no indication of why, which could not be differentiated from some abnormal cause. And M0 is ignored in the first few lines of a file. Mac user OSX10.13 / 2011 27" iMac

Playing around with 1.2.2. Apparently M0 does not take any parameters? If I throw a S# or P# after the M0 I get an error message so this clearly just to stop execution until the Resume Button (in the message box or main window) is clicked. I believe that some implementations of M0 allow including a string as a parameter that populates a message box. Clearly not the case here but would be nice if we could throw a string at the M0 command and have it populate the message box … or not.

I apologize for my ignorance here, but which 1.22 file to I download for a windows 11 64 bit system? there are several options available it seems when I go to github.

@IBCRAZY8220 You want the one the ends in x64.exe :smile: gSender-Setup-1.2.2.exe would also work, it’s the same file, different name, I checked the checksum’s.